CN203892701U - Valve packing pressing structure - Google Patents
Valve packing pressing structure Download PDFInfo
- Publication number
- CN203892701U CN203892701U CN201420135766.6U CN201420135766U CN203892701U CN 203892701 U CN203892701 U CN 203892701U CN 201420135766 U CN201420135766 U CN 201420135766U CN 203892701 U CN203892701 U CN 203892701U
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- CN
- China
- Prior art keywords
- valve
- gland
- bolt
- valve body
- upper cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a valve packing pressing structure. The valve packing pressing structure comprises a valve main body formed by a valve body upper cover, a valve body support, packing, a packing gland, a valve screw rod and a handle, and also comprises push rod bolts; the packing gland is pressed by a structure that one end face, away from the valve body upper cover, of the packing gland is provided with at least two clamping grooves along the circumference direction, the valve body support is provided with two flat plates respectively extending to two sides, the flat plates are provided with bolt holes coaxial with the clamping grooves, square heads of the push rod bolts are clamped in the matched clamping grooves of the packing gland, thread sections of the push rod bolts penetrate through the bolt holes, and the thread sections between the packing gland and the valve body support are provided with locknuts and gaskets for tightly pressing the packing gland. The pressing force of the valve packing is generated by the thrust of each push rod bolt, and a plurality of drainage grooves are symmetrically designed in the packing gland and the valve body upper cover, so valve parts, particularly the packing gland bolts, are furthest protected from being damaged by a leaked medium.
Description
Technical field
The utility model relates to a kind of filler compacting structure of valve, is specially a kind of ram bolt formula filler compacting device.
Background technique
As shown in accompanying drawing 1, Fig. 2, use at present the valve of packing filling, its filler 7 is all the pulling force that produce by screwing two or the bolt of other symmetrical quantity 21, this pulling force acts on Gland 3 and packing in stuffing box is compressed.This structure is widely used in the valve of various dependence packing_seals.The gap forming between the gap forming between valve screw and Gland 3 and Gland and valve rack is two positions that soft packing seal valve the most easily leaks.Right this two places HF leakage point adjacent gland bolt 21 again, the corrosive flowing medium that has leaking out does not have Rational Path discharge, is very easily infected with comprise nut and the bolt that gland bolt 21 is particularly related to valve seal performance and screws all positions at position.As long as leakage once in a while is just enough to make the corrosion of whole valve bolts and nuts with the Korrosionsmedium of seldom measuring.Because corrosion is just difficult to pass through fastening nut again, the method that increases the degree of compaction of packing is kept out the minute leakage already having occurred.Final final result is because of the inefficacy of the widgets such as valve bolts and nuts, whole valve to be scrapped, and must again replace a new valve and could meet production requirement.But so not only cause valve spare part expense to increase, return and bring a heavy difficult problem for the valve cut-out medium that displacement is prepared smoothly, stop work and production etc.
Model utility content
By conversion thinking, the utility model provides a kind of ram bolt formula valve filler compression structure, screw after the nut in ram bolt, ram bolt is just subject to downward thrust just can compress the filler in valve stuffing box, realize the object of valve seal, and improve the convenience of later maintenance, improve service life.
The utility model is achieved through the following technical solutions:
A kind of ram bolt, comprise bolt body, on described bolt body, there is thread section, it is characterized in that, in the one end away from thread section, be provided with square toes, described square toes inner side is provided with the thrust disc that a cross-sectional area is greater than square toes cross-sectional area, and in the bolt body between described thrust disc and thread section, is also provided with the dash edge that a section is greater than bolt body section.
The external frame on described thrust disc, dash edge is a kind of in circular or square.
A kind of valve filler compression structure, comprise the valve body being formed by valve upper cover, valve body support, filler, Gland, valve screw and handle, described valve screw passes and is arranged on valve body, described valve body support is for extending upward from valve upper cover and for a portal trestle of fixed valve screw mandrel, described filler is arranged in the valve screw mounting hole in valve upper cover and is compressed by Gland, it is characterized in that, described Gland is to compress by such structure:
Described away from Gland one end face of valve upper cover on along being circumferentially with at least two draw-in grooves, and on described valve body support, to both sides, extend respectively a flat board, on described flat board, be provided with and the bolt hole of described draw-in groove along vertical coaxial setting, described ram bolt square toes are stuck in the draw-in groove of the Gland matching with it, and the thread section of described ram bolt is through bolt hole, and on the thread section between Gland and valve body support, be provided with locking nut and pad that Gland is compressed, by screwing the locking nut in ram bolt, just can facilitate the tightness of filler in regulating valve stuffing box, and then reach the object of sealed valve stuffing box.Lower end square head structure, object is that while screwing like this nut of ram bolt, ram bolt just must not be rotated in order to be stuck in the Gland translot matching with it; Thrust disc structure is mainly transmitting thrust, realizes the function that compresses Gland; Dash, along structure, can stop the helical thread portion of the further up pollution ram bolt of leaking medium and nut; External thread structure and nut screw.
Further for realizing above-mentioned application target, in Gland and valve upper cover upper-end surface, all arrange correspondingly to leakage point by circular groove and the radial groove of row outside leakage, these grooves are that the Korrosionsmedium leaking out is drained and created conditions as early as possible.
Further, described draw-in groove is opening U-shaped or square groove outwardly.
The utility model compared with prior art, has significant advantage and effect:
The impacting force of valve packing is not the bolt tension force that comes from original structure, but produced by the thrust of ram bolt.But also on Gland with valve upper cover on some sluicing grooves of symmetric design, at utmost Protective valve door part particularly gland stud avoid the infringement of leaking medium.
Owing to regulating the bolt and nut part of filler tightness away from valve stuffing box, can farthest protect the helical thread portion of bolts and nuts, greatly reduce the maintenance of valve frequency, extend valve working life and reduce the expense expenditure that replacing valve brings.
Accompanying drawing explanation
The plan view of the original widely used stay-bolt formula filler compacting device of accompanying drawing 1.
The side view of the original widely used stay-bolt formula filler compacting device of accompanying drawing 2.
Accompanying drawing 3 is plan views of the utility model ram bolt formula filler compacting device.
Accompanying drawing 4 is A--A sectional view in Fig. 3.
Accompanying drawing 5 is I place partial enlarged drawing in Fig. 3.
Accompanying drawing 6 is valve upper cover plan view (annular collecting tank and radial strut sump pit structures of comprising its upper-end surface).
Accompanying drawing 7 is valve upper cover plan view.
Accompanying drawing 8 is H--H sectional drawing in Fig. 7.
Accompanying drawing 9 is valve body support plan views.
Accompanying drawing 10 is valve body support plan views.
Accompanying drawing 11 is valve body bracket side views.
Accompanying drawing 12 is plan views of ram bolt.
Accompanying drawing 13 is side views of ram bolt.
Accompanying drawing 14 is plan views of ram bolt.
Accompanying drawing 15 is that D in Figure 12 is to view.
Accompanying drawing 16 is Gland plan view (annular collecting tank and radial strut sump pit structures of comprising its upper-end surface).
Accompanying drawing 17 is Gland plan views.
Accompanying drawing 18 is Gland side views.
In figure, 1 valve upper cover, 2 valve body supports, 3 Glands, 4 ram bolt, 5 nuts, 6 packing rings, 7 fillers, 8 flat boards, 11 helical thread portions, 12 dash edges, 13 thrust discs, 14 square toes, 15 valve screws, 16 U-shaped draw-in grooves, 17,17 ' annular collecting tank, 18,18 ' radial strut sump pit, 21 bolts.
Embodiment
The purpose of this utility model is to provide a kind of novel ram bolt formula valve filler compression structure.This device is by comprising the valve body being comprised of valve upper cover 1, valve body support 2, filler 7, Gland 3, valve screw 15 and handle as shown in Figure 3, and the ram bolt assembly for locking, and respectively its structure explained in detail below.
Valve upper cover 1 and existing valve body structure coexist mutually in valve body and have for laying the installation slotted eye of filler 7 and valve screw, with reference to figure 6-Fig. 8.
Valve screw 15 upper ends are handwheel, can rotate, and lower end connects spool, and valve screw 15 passes and is arranged on valve body.
As Figure 9-Figure 11, its lower end is connected with valve upper cover 1 by bolt valve body support 2, and it provides a upper support to valve screw 15 for the top of fixed valve screw mandrel 15.Meanwhile, in valve body support both sides, extend respectively a flat board 8, form the pattern of flank, see shown in Fig. 9.Filler 7 is arranged on the filler of valve upper cover part and installs in slotted eye, and upper end compresses with Gland 3, and filling material gland structure is referring to figures 16 to Figure 18.
Described Gland 3 is to compress by such structure:
Ram bolt 4, shown in Figure 12-Figure 15, ram bolt 4 has spline square toes 14 below, and being assemblied in will be as shown in Figure 2 on valve.These spline square toes 14 will be stuck in the U-shaped draw-in groove 16 at the two ends of Gland shown in Figure 16, and the upper end helical thread portion 11 of ram bolt is by more loose through in the bolt hole in valve body support 2 upper end flat boards in Fig. 4, and bolt hole plays positioning action.When screwing nut compressing filler, because whole bolt tail square toes are firmly stuck in the U-shaped draw-in groove 16 of the Gland 3 matching with it, therefore bolt must not rotate and the thrust of mainly bearing nut 5, this thrust is resisted against the thrust disc 13 by ram bolt 4 lower ends on Gland 3, form the pattern of two end supports, and then the stuffing box packing in compression stuffing box 7, realize the sealing at this place.In bolt upper end, thrust conducts to valve body support 2 by nut in Fig. 35, packing ring 6.
As shown in Figure 3, the annular space that Gland 3 endoporus and valve screw cylindrical form, i.e. E place in figure; The annular space forming between Gland bottom cylindrical and valve upper cover valve body inner bore, i.e. F place in figure.In the using process of filler-sealing type valve, this two place is the position that leakage the most easily occurs.
For E, F two places, easily produce the valve common fault of leakage, in appropriate position, be all designed with annular collecting tank and radial strut sump pit structure.This structure can make the leaking medium very first time having occurred via water conservancy diversion groove, drain, drain nearby, reduces the time contacting and the chance of Korrosionsmedium and valve part, is a kind of safety measure.Be exactly the leakage for E place concretely, on Gland 3, be shaped with annular collecting tank 17 and see Figure 16 with radial strut sump pit 18(concrete form and structure); For the leakage at F place, at valve upper cover 1, be shaped with annular collecting tank 17 ' and radial strut sump pit 18 ', as Fig. 7.These grooves all can be by milling cutter milling systems or are directly cast out.
Ram bolt middle part shown in Figure 12 also has a dash along 12 structures.Even if as already leaked in E, F place in Fig. 3; Korrosionsmedium has been infected with the bottom of ram bolt; dash along still stoping Korrosionsmedium to continue to move ahead, is avoided encroaching on to protect dash to screw position along 12 top ram bolt exposed outside thread positions and ram bolt nut.
Claims (3)
1. a valve filler compression structure, comprise by valve upper cover, valve body support, filler, Gland, the valve body that valve screw and handle form, described valve screw passes and is arranged on valve body, described valve body support is for extending upward from valve upper cover and for a portal trestle of fixed valve screw mandrel, described filler is arranged in the valve screw mounting hole in valve upper cover and is compressed by Gland, it is characterized in that, also comprise ram bolt, described ram bolt comprises bolt body, on described bolt body, there is thread section, in the one end away from thread section, be provided with square toes, described square toes inner side is provided with the thrust disc that a cross-sectional area is greater than square toes cross-sectional area, and in the bolt body between described thrust disc and thread section, be also provided with the dash edge that a section is greater than bolt body section,
Described Gland is to compress by such structure:
On described Gland one end face away from valve upper cover, edge is circumferentially with at least two draw-in grooves, and on described valve body support, to both sides, extend respectively a flat board, on described flat board, be provided with and the bolt hole of described draw-in groove along vertical coaxial setting, described ram bolt square toes are stuck in the draw-in groove of the Gland matching with it, and the thread section of described ram bolt passes bolt hole, and on the thread section between Gland and valve body support, be provided with locking nut and the pad that Gland is compressed.
2. a kind of valve filler compression structure according to claim 1, is characterized in that, all arranges corresponding to leakage point by circular groove and the radial groove of row outside leakage in Gland and valve upper cover upper-end surface.
3. a kind of valve filler compression structure according to claim 1, is characterized in that, described draw-in groove is opening U-shaped or square groove outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135766.6U CN203892701U (en) | 2014-03-25 | 2014-03-25 | Valve packing pressing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135766.6U CN203892701U (en) | 2014-03-25 | 2014-03-25 | Valve packing pressing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892701U true CN203892701U (en) | 2014-10-22 |
Family
ID=51719106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135766.6U Withdrawn - After Issue CN203892701U (en) | 2014-03-25 | 2014-03-25 | Valve packing pressing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851256A (en) * | 2014-03-25 | 2014-06-11 | 济钢集团有限公司 | Push rod bolt and packing pressing structure |
-
2014
- 2014-03-25 CN CN201420135766.6U patent/CN203892701U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851256A (en) * | 2014-03-25 | 2014-06-11 | 济钢集团有限公司 | Push rod bolt and packing pressing structure |
| CN103851256B (en) * | 2014-03-25 | 2016-04-13 | 济钢集团有限公司 | A kind of ram bolt and filler compacting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141022 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |